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2 years ago

Scientists hypothesize that prokaryotes evolved before eukaryotes because

Biology

1 answer:

DiKsa [7]2 years ago

4 0

Answer: e. prokaryotic cells lack nuclei.

Explanation: Prokaryotes are unicellular (single-cell) organisms that lack well developed cell internal membrane-bound structures or organelles. They do not have a nucleus but generally, they have a single chromosome that possess a double-stranded DNA located in an area of the cell called the nucleoid. Most prokaryotes have a cell wall outside the plasma membrane.

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Match each type of precipitation to the conditions in which it forms.

Ugo [173]

sleet c

frezzing rain b

snow d

rain a

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2 years ago

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Using your knowledge of Punnett squares and hybridization, what is the probability that a purebred monohybrid, dihybrid, three-f

Nimfa-mama [501]

Answer:

100%

Explanation:

No matter how many factors are in the cross, if an 2 purebred (homozygous individuals) are crossed, (one dominant, one recessive) the dominant phenotype will always be displayed.

Imagine a cross with between two individuals true breeding for 6 traits. One shows all dominant genotypes, one shows all recessive genotypes. The only gametes those individuals can pass on will always produce heterozygotes.

AABBCCDDEEFFGG x aabbccddeeffgg

The first individual can only give ABCDEFG alleles. The second individual can only give abcdefg alleles. Therefore, all offspring will be AaBbCcDdEeFfGg, and will therefore express the dominant trait.

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2 years ago

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Lawrence Kohlberg built on the theories of _____ in his description of the stages of moral development. A. Carol Gilligan B. Jea

Ymorist [56]

Answer:

Lawrence Kohlberg build on the theories of Jean Piaget in his description of the stages of moral development.

Explanation:

The earlier work of Jean Piaget on cognitive development of children was expanded by Lawrence Kohlberg which he described in 6 stages.

1.Stage 1 : Obedience and punishment orientation

This is focused on children to obey rules and avoid from punishment.

2.Stage 2: Orientation through instruments

Individual should have to be in their best interest

3.Stage 3 : Good boy , nice girl orientation

The children will approve others and acts to avoid disapproval.Emphasis is placed on good and nice behavior.

4.Stage 4:Law and order orientation

The child will accept the rules of the society as rules are same for everyone.

5.Stage 5: Social contract orientation-

The world holds different opinions,right,and values and each will accept it mutually.

6. Stage 6: Universal ethical principal orientation-

It is based on abstract reasoning where ethical principles are used.

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3 years ago

What are endorphins and how do these chemicals alter the communication of pain in the body?

Solnce55 [7]

Endorphins are brain chemicals known as neurotransmitters which are released when the body feels a certain amount of stress and pain. Endorphins alter the communication of pain in the body by interacting with the opiate receptors and blocking the synapse so that signals cannot be sent to the brain in order to reduce an individual perception of pain.

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3 years ago

Transpiration is the process of water movement through a plant and its evaporation from plant parts, such as the leaves, stems a

Elza [17]

Answer:

Plants absorb water in a large amount because water is the only medium which is present in a plant for the transportation of minerals. So, the plant absorbs a lot of water even if it is lose by transpiration.

Explanation:

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2 years ago